Table 6.

Critical parameter values at different perturbations.

Parameters/Levels	−1	0	+1
Size $\left(\mathit{\mu m}\right)$	800	1000	1200
Porosity	0.1	0.3	0.5
$D_e$ at low API %	$D_e=0.5D_{\mathit{API}}$	$D_e=D_{\mathit{API}}$	$D_e=2D_{\mathit{API}}$
$D_e$ at high API %	$D_e=0.5D_{\mathit{API}}$	$D_e=D_{\mathit{API}}$	$D_e=2D_{\mathit{API}}$